Effect of the Purple Corn Beverage “Chicha Morada” in Composite Resin during Dental Bleaching

Table 2

Media of , , , and at different times among groups.

		PB	P	TB	T	WB	W
	T3–T0	−2.9	−4.3	−2.0	−1.9	−1.7	−1.6
	T6–T3	−2.2	−1.5	−0.3	0.3	0.2	−0.7
	T6–T0	−5.1	−5.8	−2.4	−1.5	−1.5	−2.2
	T3–T0	−2.1	−3.2	−2.1	−1.6	−1.2	−1.0
	T6–T3	−1.5	−1.4	−2.1	−1.4	0.5	−0.3
	T6–T0	−3.7	−4.6	−4.1	−3.0	−0.7	−1.3
	T3–T0	1.0	0.5	1.0	0.7	0.9	0.3
	T6–T3	0.6	0.9	0.9	1.2	0.3	0.3
	T6–T0	1.6	1.4	2.0	1.9	1.2	0.7
	T3–T0	−2.2	−3.1	−1.0	−1.2	−1.5	−1.3
	T6–T3	−2.0	−1.0	−0.4	−0.5	−0.4	−0.9
	T6–T0	−4.2	−4.2	−1.5	−1.7	−1.9	−2.2

Data followed by different letters at the horizontal are statistically significantly different by Tukey test (). indicates clinically unacceptable value (). PB: purple corn + bleaching; P: purple corn; TB: green tea + bleaching; T: green tea; WB: distilled water + bleaching; W: distilled water; T3–T0: during bleaching; T6–T3: after bleaching; and T6–T0: during + after bleaching.